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Comments

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AMD Launches New Higher-End Kaveri APUs A10-7800 and A6-7400K

serviscope_minor OpenCL, HSA? (105 comments)

They seem to have missed some really important benchmarks.

Clearly on the graphics side, the APU kills the i5.

The interesting thing was HSA which allows low latency CPU/GPGPU workloads, which allows the (relatively slow) GPU to work on a MUCH wider range of problems than any comparable product. Early indications, such as the LibreOffice spreadsheet program had the A10 killing even the top end i7s.

For other less extreme examples, the A10 was comfortably outpacing the i5 by a factor of 2 or more.

yesterday
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Was America's Top Rocketeer a Communist Spy? The FBI Thought So

serviscope_minor Re:Van Braun built weapons for Nazis (161 comments)

f he faced a choice between following his dreams and not killing people I'd have to say the latter is the far better choice.

It's very easy to say that when faced with threats against yourself or your family. We'd all like to believe that we'd do the right thing in the face of overwhelming adversity, but frankly you have no way of knowing what you'd do until it happens.

It is however easy to judge from behind the safety of a keyboard.

yesterday
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Was America's Top Rocketeer a Communist Spy? The FBI Thought So

serviscope_minor Re:White Werhner von Braun may be many things... (161 comments)

That simplifies is slightly.

The V2 was about as expensive as a top-end fighter jet (thought the only jets were top end then). So every V2 meant one less fighter in the air, except it didn't. The problem they had was a massive lack of oil for fuel which means the fighters couldn't fly. The V2s were powered by alcohol, and no one had planes able to run off the stuff then.

Also, if the Reich's nuclear bomb ambitions had worked out, the V2 would have provided an unstoppable delivery mechanism.

yesterday
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Jesse Jackson: Tech Diversity Is Next Civil Rights Step

serviscope_minor Re:He just doesent' get it.. (504 comments)

Not anymore... there's a big confusion over equal opportunity vs equal outcome. Conservatives typically believe in equal opportunity, liberals mostly believe in equal opportunity with some leanings towards equal outcome (that is the justification for affirmative action).

Well that's the thing. Conservatives like to believe we already have equal opportunity and the disparity is just due to the intake. They use that to dismiss affermative action.

The fact remains there is not equal *opportnity*. Affermative action does help to correct that.

There was an article here posted about CVs in some context (academic?). The CVs were of course made up allowing the researchers to perfectly control for the content. CVs attached to "black" sounding names were consistently rated worse.

That means they were not being given equal opportunity.

Affermative action corrects for that.

2 days ago
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Chinese Government Probes Microsoft For Breaches of Monopoly Law

serviscope_minor Re:The Chinese are playing... (107 comments)

Whoever modded this insightful is an idiot.

The EU takes a very dim view on abusive companies, local or foreign. Whining because the company is American just means you get to whine twice. Once because the evil Europeans are harming the benevolent rich american companies and once more because you have shitty phone contracts that massively suck, unlike in the EU, where they dealt with those *local* companies.

2 days ago
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Jesse Jackson: Tech Diversity Is Next Civil Rights Step

serviscope_minor Re:He just doesent' get it.. (504 comments)

Tech isn't about equal rights. It's about if you are smart enough to get it done.

That's the fucking definition of equal rights.

If there isn't a minority in there they are not smart enough.

Ah the old *ism doesn't exist because I say so argument.

2 days ago
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Jesse Jackson: Tech Diversity Is Next Civil Rights Step

serviscope_minor Re:What Jesse wants (504 comments)

Was there a racial element to the interview? Probably, given that black men are very rare in IT and that people are not used to dealing with unusual things in many ways. However, these sound like typical dumbass "brainteaser" questions:

So now questions like, "How does one measure the amount of water passing a particular point in a river?" or "Why can you not see the Moon during the day?" are being asked.

The problem is they're not really brainteasers, in that they're fun "impossible" or "off the wall" questions.

The first is a rather fun question and has had many solutions with a rather interesting history. If you've happened to done any civil engineering, then you may have covered streamflow measurement in which case the first answer is somewhat nuanced and based on the size of the river, number of measurements required and various other constraints.

The second one is the old "why are manhole covers round" in that the question is outright wrong.

2 days ago
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Quiet Cooling With a Copper Foam Heatsink

serviscope_minor Re:What are you running? (164 comments)


I never run above 60C with stable clocks, usually...
Seriously, what processor will run that hot?

Most of 'em. My eee 900 (which I'm posting from) has been hovvering around 60C for about the past 5 years. Current uptime is 114 days and it's sitting comfortably at 58C at the moment.

2 days ago
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Quiet Cooling With a Copper Foam Heatsink

serviscope_minor Re:As Flammable as Steel Wool? (164 comments)

Will this "copper wool" be as flammable as steel wool? If so, that could spell trouble.

No. This is much less fine than steel wool: try burning a steel scourer. Second, copper is substantially less reactive than iron.

2 days ago
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Programming Languages You'll Need Next Year (and Beyond)

serviscope_minor Re:Repeat after me... (311 comments)

It's not about the superiority of languages it's what the programmers who use it feel superior to.

3 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:I know you're trying to be funny, but... (729 comments)

In other words, if you really are smarter than the mass of men, knowing that is not arrogance.

His most recent rant about C++ smacks of arrogance, because it's a very strongly held opinion backed only by incorrect facts, poor logic and outright logical fallacies. He is smarter than "the masses" but he's not smarter than people like Stroustrup, Sutter, Bright, Alexandrescu, Stepanov and such like. They are all preeminent in their fields and very, very smart people.

4 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:I know you're trying to be funny, but... (729 comments)

C++ proponents aren't very humble

What like Strostrup? Sutter? Alexandrescu? Some evidence required for your bold claim.

neither is the language itself

That makes no sense whatsoever.

I also get upset with people constantly trying to shove C++ on top of C projects, just because they don't know C very well.

I also get upset by people needlessly sticking to C because they don't understand C++ very well. Your point?

4 days ago
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Oracle Offers Custom Intel Chips and Unanticipated Costs

serviscope_minor Sales flow chart. (96 comments)

Here is a flow chart to decide whether to buy Oracle products:

<Do you enjoy being utterly fucked over?> Yes--> Buy Oracle. No--> Run for the hills.

I've been at two places which have been Oracle'd. It's like being pwn3d except you end up $10,000,000 poorer. You also end up with less dignity than the inevitable tebagging you might get in Halo.

4 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:Oe noes! A compiler bug! (729 comments)

But the shift within the Linux kernel code was still valid C (C++?) code, so it was a compiler problem, even though it didn't affect most programs.

The things Linux are doing are way way outside the C spec. Nopt surprising, since the C spec doesn't have much to say about interrupt routines. It's an intersection of obscure techniques, one particular platform and obscure compiler options not all being implemented together properly.

5 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:Oe noes! A compiler bug! (729 comments)

GCC is very standards compliant in that it will compile almost all standards compliant code correctly.

As I said, all compilers have non portable extensions. If GCC went and DIAF as you so desire, you'd just get people writing to the non portable extensions of the other compilers. So then you'd move the hate along.

What this translates to is that you hate the most popular compiler.

5 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:I know you're trying to be funny, but... (729 comments)

Linus is actually a very humble guy

His rants about C++ do not sound like the rants of a humble person.

5 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:Oe noes! A compiler bug! (729 comments)

u wot m8?

Seriously I have no idea which part of my post you're replying to---something about your lack of quoting.

5 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:Oe noes! A compiler bug! (729 comments)

haha good call. I didn't realise 4.9.1 was out. Should have wageredon the next release version, not a specific number.

5 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:Oe noes! A compiler bug! (729 comments)

GCC is a mess that has been getting consistently worse since 3.0. It's so bad that compiling GCC with GCC, with any CPU optimizations enabled, produces a non-working compiler.

[citation needed]

It just keeps getting bigger and slower, and has a great many proprietary GCC-isms that open source developers keep using, not even realizing they're bugs.

Every single compiler out there offers nonportable extensions.

Either you're not looking (myopia is fun), or you have very little experience with other modern compilers.

I could level the same complaint at you. The other compilers have more. Like full up ICE crashes.

Only true if you drink rms' kool-aid...

Ah and now we get to the root of it. You've decided to throw logic and facts to the wind and just go off on an I-hate-RMS-so-I-hate-GCC-by-proxy rant.

Grow up.

5 days ago
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Linus Torvalds: "GCC 4.9.0 Seems To Be Terminally Broken"

serviscope_minor Re:Oe noes! A compiler bug! (729 comments)

Really? I hate GCC with a passion. Otherwise, we wouldn't have 'gccisms' that affect code portability to other POSIX platforms. GCC can go DIAF for all I care.

So, tell me mr GCC hater, which compilers don't have non-portable extensions?

5 days ago

Submissions

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Ask slashdot: Clusters on the cheap?

serviscope_minor serviscope_minor writes  |  more than 2 years ago

serviscope_minor (664417) writes "Dear Slashdotters,

A friend of mine has recently started a research group. As usual with these things, she is on a shoestring budget and has computational demands. The computational task is very parallel (but implementing it on GPUs is an open research problem and not the topic of research), and very CPU bound.

Can slashdotters advise on a practical way of getting really high bang for buck? The budget is about 4000 GBP (excluding VAT/sales tax), though it is likely that the system will be expanded later.

The computers will probably end up running a boring Linux distro and Sun GridEngine to manage batch processing (with home directories shared over NFS?)."
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Best removable storage filesystem for Linux?

serviscope_minor serviscope_minor writes  |  more than 4 years ago

serviscope_minor (664417) writes "What filesystem do you use for portable disks, especially large ones, under Linux? FAT is simply not very good. Using a proper filesystem (e.g. ext3) preserves the read/write permissions of the original machine which is rather annoying when the disk is moved to a different machine with differet user IDs. So is there a way to have a good filesystem that supports all the unixy things such as symlinks, and an execute bit, but does not require lots of chown'ing as root when moved to a different machine?"
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ARM Based netbook.

serviscope_minor serviscope_minor writes  |  more than 5 years ago

serviscope_minor (664417) writes "Shopping in Robert Dyas of all places (note to non English readers, this is a fairly generic hardware store and has only a small selection of electronics at best) I noticed Inkia ARM based netbooks being advertised, though careful readers will note that the specs seem to differ slightly. The specs are the usual netbook ones along with an 800x480 screen 64Meg RAM, 1G flash and a 400 (or maybe 533MHz) Samsung ARM processor and WinCE. So, it looks like the first non-x86 netbooks have arrived. Sadly, this one is rather expensive, being slightly cheaper than the EEE 2G, with a painfully small amount of RAM, less storage and battery power. But this brings up several interesting questions: are they going to get much cheaper, are there ones with more memory, and will it run OpenBSD? The specs are very similar to the Sharp Zaurus 3000 series which runs OpenBSD very well, but running Firefox in 64M is somewhat painful."
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Liquid explosives: no danger and no plot.

serviscope_minor serviscope_minor writes  |  more than 5 years ago

serviscope_minor (664417) writes "It has already been established in a previous article that bringing down an aircraft with liquid explosives mixed on a pllane would be very difficult. The men accused of the plot werer brought to trial and a verdict has now been reached. There was not enough evidence to convice any of them of targeting a plane. So apparently, there was not much evidence of a plot that could not have worked anyway."
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Good profiling tools for C/C++ unser un*x?

serviscope_minor serviscope_minor writes  |  about 7 years ago

serviscope_minor (664417) writes "It should be well known to any developer that you should only optimize parts of a program which need optimizing. And the way to find those parts is through profiling. This simplifies one point: profiling is difficult. The obvious way is to enable profiling in the compiler and use gprof, but this has problems. Firstly there is no point in profiling a program without turning on -O3 (or which ever), since this can change the results dramatically. Secondly, -O3 will inline functions which can ruin profiling results by making them far too coarse. Even if it doesn't do this, there is no way of determining which part of a function is taking up all the time. So that brings me to my question: does anyone know of profiling tools which do not suffer from these problems? My platform is C++ (using g++) on Linux."
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serviscope_minor serviscope_minor writes  |  more than 7 years ago

serviscope_minor (664417) writes "You heard earlier today that Dell will be shipping Ubuntu on selected models. Naturally, this is interesting to slashdotters. However, the interest generated by a wider audience will ultimately be more important. Well, apparently, this is the 3rd most popuar topic on the BBC at the moment. So apparently this is interesting to a general audience. I believe that this bodes very well for the future."

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